How to add an SG to the Admin Group of a newly created VM in SCVMM cloud

Hi, have given a team access to the SCVMM private cloud to create there own VM's , what I would like todo, is to add the SG that these guys are a member of to that servers Admin Group.

Otherwise they cannot log in, when once there server is created.

it joins to the domain fine etc.

Now, can this be done via PS in the template somewhere, or is there another way. ??

any ideas greatly appreciated

Thanks

Mark Green